No problem, we've got 1615 and 1066 to multiply
1615 × 1066 = 1066 × (1615)
+ 1066 × 5 that results in 5330
+ 1066 × 10 that equals 10660
+ 1066 × 600 that is equal 639600
+ 1066 × 1000 yielding 1066000

= 1721590
